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EN 60695-1-21:2016

(Main)

Fire hazard testing - Part 1-21: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - Summary and relevance of test methods

Fire hazard testing - Part 1-21: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - Summary and relevance of test methods

IEC 60695-1-21:2016 provides a summary of test methods that are used to determine the ignitability of electrotechnical products or materials from which they are formed. It also includes test methods in which, by design, ignitability is a significant quantifiable characteristic. It represents the current state of the art of the test methods and, where available, includes special observations on their relevance and use. The list of test methods is not to be considered exhaustive, and test methods which were not developed by the IEC are not to be considered as endorsed by the IEC unless this is specifically stated. This basic safety publication is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. It is not intended for use by manufacturers or certification bodies. This first edition of IEC 60695-1-21 cancels and replaces the first edition of IEC TR 60695-1-21 published in 2008. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - Change from a TR to an international standard; - Modified Introduction; - Modified Scope; - Updated normative references; - Updated terms and definitions; - Updates and new text in Clause 4; - Addition of text concerning ASTM D 3638; - Updates to Annex A and Updates to the bibliography. Key words: Fire Hazard, Fire Safety Engineering, Ignitability.

Prüfungen zur Beurteilung der Brandgefahr - Teil 1-21: Anleitung zur Beurteilung der Brandgefahr von elektrotechnischen Erzeugnissen - Entzündbarkeit - Zusammenfassung und Bedeutung der Prüfverfahren

Essais relatifs aux risques du feu - Partie 1-21: Lignes directrices pour l'évaluation des risques du feu des produits électrotechniques - Allumabilité - Résumé et pertinence des méthodes d'essais

L'IEC 60695-1-21:2016 donne un résumé des méthodes d'essai qui sont utilisées pour déterminer l'allumabilité des produits électrotechniques ou des matériaux à partir desquels ils sont fabriqués. Elle inclut également les méthodes d'essai pour lesquelles, par conception, l'allumabilité est une caractéristique quantifiable significative. Elle représente l'état de l'art de ces méthodes d'essai et, lorsque cela est applicable, inclut des observations spéciales concernant leur pertinence et leur utilisation. La liste des méthodes d'essai ne doit pas être considérée comme exhaustive et les méthodes d'essai qui n'ont pas été élaborées par l'IEC ne doivent pas être considérées comme étant entérinées par l'IEC sauf si cela est spécifiquement indiqué. La présente publication fondamentale de sécurité est destinée à être utilisée par les comités d'études pour l'élaboration de leurs normes conformément aux principes exposés dans le Guide IEC 104 et dans le Guide ISO/IEC 51. Elle n'est pas destiné à l'usage par des fabricants ou par des organismes de certification. Cette première édition de l'IEC 60695-1-21 annule et remplace la première édition de l'IEC TR 60695-1-21 parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - Changement d'un TR à une norme internationale; - Introduction modifiée; - Domaine d'application modifié; - Références normatives mises à jour; - Termes et définitions mis à jour; - Mises à jour et nouveau texte dans l'Article 4; - Complément de texte concernant l'ASTM D 3638; - Mises à jour de l'Annexe A et mises à jour de la bibliographie. Mots clés: Risques du feu, l'ingénierie de la sécurité incendie, Allumabilité

Preskušanje požarne ogroženosti - 1-21. del: Navodilo za ocenjevanje požarne ogroženosti elektrotehničnih izdelkov - Vžigljivost - Povzetek in pomen preskusnih metod (IEC 60695-1-21:2016)

Ta del standarda IEC 60695 zagotavlja pregled preskusnih metod, ki se uporabljajo za določevanje vžigljivosti elektrotehničnih izdelkov ali materialov, iz katerih so izdelani. Vključuje tudi preskusne metode, ki so zasnovane tako, da je vžigljivost pomembna merljiva lastnost.
Predstavlja trenutno najbolj izpopolnjene preskusne metode in vsebuje dodatna opažanja glede njihove primernosti in uporabe, če so na voljo. Seznam preskusnih metod ni popoln in preskusnih metod, ki jih ni razvil IEC, slednji ne podpira, razen če je navedeno drugače.
Ta osnovna varnostna publikacija je namenjena tehničnim odborom za pripravo standardov v skladu z načeli vodil IEC 104 in ISO/IEC 51.
Ena od pristojnosti tehničnih odborov je, da med pripravo publikacij uporabljajo osnovne varnostne publikacije, kadar je to primerno.

General Information

Status
Published
Publication Date
10-Nov-2016
Withdrawal Date
11-Oct-2019
ICS
13.220.40 - Ignitability and burning behaviour of materials and products
29.020 - Electrical engineering in general
Technical Committee
CLC/SR 89 - Fire hazard testing
Drafting Committee
IEC/TC 89 - IEC_TC_89
Current Stage
6060 - Document made available - Publishing
Start Date
11-Nov-2016
Completion Date
11-Nov-2016
Ref Project
SIST EN 60695-1-21:2017 - Fire hazard testing - Part 1-21: Guidance for assessing the fire hazard of electrotechnical products - Ignitability - Summary and relevance of test methods (IEC 60695-1-21:2016)

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SLOVENSKI STANDARD
01-januar-2017
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Fire hazard testing - Part 1-21: Guidance for assessing the fire hazard of electrotechnical
products - Ignitability - Summary and relevance of test methods (IEC 60695-1-21:2016)
Essais relatifs aux risques du feu - Partie 1-21: Lignes directrices pour l'évaluation des
risques du feu des produits électrotechniques - Allumabilité - Résumé et pertinence des
méthodes d'essais
Ta slovenski standard je istoveten z: EN 60695-1-21:2016
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
29.020 Elektrotehnika na splošno Electrical engineering in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60695-1-21

NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2016
ICS 29.020; 13.220.40
English Version
Fire hazard testing - Part 1-21: Guidance for assessing the fire
hazard of electrotechnical products - Ignitability - Summary and
relevance of test methods
(IEC 60695-1-21:2016)
Essais relatifs aux risques du feu - Partie 1-21: Lignes Prüfungen zur Beurteilung der Brandgefahr - Teil 1-21:
directrices pour l'évaluation des risques du feu des produits Anleitung zur Beurteilung der Brandgefahr von
électrotechniques - Allumabilité - Résumé et pertinence des elektrotechnischen Erzeugnissen - Entzündbarkeit -
méthodes d'essais Zusammenfassung und Bedeutung der Prüfverfahren
(IEC 60695-1-21:2016) (IEC 60695-1-21:2016)
This European Standard was approved by CENELEC on 2016-10-12. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60695-1-21:2016 E
European foreword
The text of document 89/1336/FDIS, future edition 1 of IEC 60695-1-21, prepared by IEC/TC 89 "Fire
hazard testing" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN
60695-1-21:2016.
The following dates are fixed:
(dop) 2017-07-12
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2019-10-12
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60695-1-21:2016 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

ISO 11357 (Series) NOTE Harmonized as EN ISO 11357 (Series).
ISO 4589-1:1996 NOTE Harmonized as EN ISO 4589-1:1999.
ISO 4589-2:1996 NOTE Harmonized as EN ISO 4589-2:1999.
ISO 4589-3:1996 NOTE Harmonized as EN ISO 4589-3:1999.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60695-1-20 -  Fire hazard testing - Part 1-20: Guidance EN 60695-1-20 -
for assessing the fire hazard of
electrotechnical products - Ignitability -
General guidance
IEC 60695-1-30 -  Fire hazard testing -- Part 1-30: Guidance EN 60695-1-30 -
for assessing the fire hazard of
electrotechnical products - Preselection
testing process - General guidelines
IEC 60695-4 2012 Fire hazard testing -- Part 4: Terminology EN 60695-4 2012
concerning fire tests for electrotechnical
products
IEC Guide 104 -  The preparation of safety publications and - -
the use of basic safety publications and
group safety publications
ISO 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010
ISO/IEC Guide 51 -  Safety aspects - Guidelines for their - -
inclusion in standards
IEC 60695-1-21 ®
Edition 1.0 2016-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ

Fire hazard testing –
Part 1-21: Guidance for assessing the fire hazard of electrotechnical products –

Ignitability – Summary and relevance of test methods

Essais relatifs aux risques du feu –

Partie 1-21: Lignes directrices pour l’évaluation des risques du feu des produits

électrotechniques – Allumabilité – Résumé et pertinence des méthodes d'essais

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40, 29.020 ISBN 978-2-8322-3617-8

– 2 – IEC 60695-1-21:2016  IEC 2016
CONTENTS
FOREWORD .3
INTRODUCTION .5
1 Scope .7
2 Normative references .7
3 Terms and definitions .8
4 Summary of published test methods . 12
4.1 General . 12
4.2 Tests using heated air or electrical heating . 12
4.2.1 Determination of ignition temperature using a hot-air furnace, ISO 871 . 12
4.2.2 Differential scanning calorimetry (DSC), ISO 11357 [1] . 13
4.3 Tests using radiant heat . 14
4.3.1 Heat release rate – Cone calorimeter method, ISO 5660-1 [4] . 14
4.3.2 Heat release of insulating liquids, IEC TS 60695-8-3 [5] . 15
4.3.3 Standard test method for determining material ignition and flame
spread properties, ASTM E 1321 [6] . 16
4.3.4 Determination of the characteristic heat flux for ignition from a non-
contacting flame source, IEC TS 60695-11-11 [7] . 17
4.4 Oxygen index tests . 17
4.4.1 Oxygen index – Ambient temperature test, ISO 4589-2 [8] . 17
4.4.2 Oxygen index – Elevated temperature test, ISO 4589-3 [10] . 18
4.5 Glowing/hot-wire based test methods . 20
4.5.1 Glow wire tests, IEC 60695-2-11 [14], IEC 60695-2-12 [15] and
IEC 60695-2-13 [16] . 20
4.5.2 Hot wire coil ignitability test, IEC 60695-2-20 and ASTM D 3874 [17] . 22
4.6 Flame tests . 23
4.6.1 Needle flame test, IEC 60695-11-5 [18] . 23
4.6.2 50 W Horizontal and vertical flame test methods, IEC 60695-11-10 [19]
500 W flame test methods, IEC 60695-11-20 [20] . 24
4.6.3 1 kW nominal pre-mixed flame, IEC 60695-11-2 [23] . 25
4.6.4 Vertical and 60° tests for aircraft components, FAR 25 [25] . 25
4.7 Tests using an electrical arc . 26
4.7.1 Tracking index tests, IEC 60112 [26], ASTM D 3638 [27] . 26
4.7.2 High-Current Arc Ignition (HAI), UL 746A – Sec. 32 [30] . 28
4.7.3 High-voltage arc resistance to ignition (HVAR), UL 746A – Sec. 33 [31] . 28
Annex A (informative) Applicability of test methods . 30
A.1 Applicability of test methods . 30
Bibliography . 32

Table 1 – Main differences between IEC 60112 and ASTM D 3638 . 27
Table A.1 – Applicability of test methods (1 of 2) . 30

IEC 60695-1-21:2016  IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 1-21: Guidance for assessing
the fire hazard of electrotechnical products –
Ignitability – Summary and relevance of test methods

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal i
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SIST EN IEC 60695-1-12:2020

IEC 60695-1-12:2015 is intended as a general guideline for IEC Product Committees and provides: - an explanation of the principles and uses of fire safety engineering; - guidance on the use of fire safety engineering in the design of electrotechnical products; - fire safety engineering terminology and concepts; - an indication of properties, data and tests needed for input into fire safety engineering assessments and - informative references. This international standard is not intended to be a detailed technical design guide, but is intended to provide guidance for product committees on fire safety engineering methods and performance based test information needs for use in performance based designs and fire hazard assessments of electrotechnical materials, assemblies, products and systems. This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. Key words: Fire Hazard, Fire Test Method, Fire Safety Engineering This publication is to be read in conjunction with IEC 60695-1-10:2009 and IEC 60695-1-11:2014.

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EN 60695-11-5:2017(Main)
Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance
SIST EN 60695-11-5:2017

Specifies a needle-flame test to simulate the effect of a small flame which may result from fault conditions, in order to assess by a simulation technique the fire hazard. It is applicable to electrotechnical equipment, its sub-assemblies and components and to solid electrical insulating materials or other combustible materials. This first edition of EN 60695-11-5 cancels and replaces the second edition of EN 60695-2-2, issued in 1991 and its amendment 1 (1994). It also constitutes a technical revision. The structure of this standard remains essentially the same with some major new changes and concepts added: - The scope has been broadened to allow this test method to also simulate the effects of small flames from outside the equipment. - A new concept has been added which allows the burner to be moved during the test to avoid dripping material from falling onto the tip of the burner tube. - The burner tube material is now a referenced source. - The reference for the copper block material has changed - the ISO publication (ISO 1337) has been withdrawn with no replacement. A new callout is now used. - Informative Annex B and a bibliography have been added. It has the status of a basic safety publication in accordance with IEC Guide 104.

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EN 60695-1-30:2017(Main)
Fire hazard testing - Part 1-30: Guidance for assessing the fire hazard of electrotechnical products - Preselection testing process - General guidelines
SIST EN 60695-1-30:2017

IEC 60695-1-30:2008 provides guidance for assessing and choosing candidate materials, components or sub-assemblies for making an end-product based upon preselection testing. It describes how preselection provides comparative fire hazard test methods to evaluate the performance of a test specimen and how preselection can be used in the selection of materials, parts, components and sub-assemblies during the design stage of an end-product. The major changes with respect to the previous edition are as follows: - Further explanation given in the introduction and Scope - Clause 3 changes to the definitions - Clause 4 clarifications of the principles of product design considering preselection - Clause 5 clarifications of the advantages and limitations of preselection - Clause 6 clarifications of the aspects of preselection relative to hazard assessment - Annex A changes in the references for examples of test methods which may be relevant to preselection - Annex B changes in the illustrative example of the flowchart of the use of preselection tests for resistance to fire hazards of a specific product type. This publication has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51.

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